Valve Spring Inspection - Suzuki Grand Vitara 2011 Manual

Cylinder head
Item
Cylinder head height "a"
Valve seat Intake valve
housing inside
Exhaust
diameter "b"
valve
Valve guide housing inside
diameter "c"
Specification
161.00 – 164.50 mm
(6.3386 – 6.4763 in.)
36.877 – 36.907 mm
(1.45185 – 1.45303 in.)
33.500 – 33.529 mm
(1.31890 – 1.32003 in.)
11.95 – 11.98 mm
(0.4705 – 0.4716 in.)
I5JB0B140092-01
I5JB0B140093-01
I5JB0B140094-01
Engine Mechanical: For F9Q Engine 1D-179
Cylinder head gasket
Item
Cylinder head gasket
thickness "a"
"b": Measured point

Valve Spring Inspection

Valve Spring Free Length and Preload
Referring to data, check to be sure that each spring is in
sound condition, free of any evidence of breakage or
weakening. Remember, weakened valve springs can
cause chatter, not to mention possibility of reducing
power output due to gas leakage caused by decreased
seating pressure.
Valve spring free length
44 – 48 mm (1.74 – 1.88 in.)
Valve spring preload
27 N (2.7 kg, 6.0 lb) for 37.5 mm (1.476 in.)
61.4 N (6.14 kg, 13.5 lb) for 27.5 mm (1.083 in.)
Specification
1.27 – 1.37 mm
(0.0500 – 0.0539 in.)
I5JB0B140095-01
S6JB0A1436029
I2RH01140143-01